Just a curious question to you enjoy playing age of sigmar with fluffy army's/narrative and what books do you mostly use?

As for me I use bloodbound formations from the khorne bloodbound battletome and the realm of fire with missions in that campaign book the last narrative campaign I did with some friends was.

The watchtower mission
If invaders won then it was The ritual mission
If defenders won then it was Stand or Die mission

It was so much fun and very themed because I played khorne wile the other person played storm casts I lost unfortunately those stormcasts hit hard.